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Finding the Fourth Proportional to 653,074.20, 978,299.10 and 372,263.40

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Solution

The fourth proportional to 653,074.20, 978,299.10 and 372,263.40 is: 557,647.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,074.20 : 978,299.10 = 372,263.40 : x
  2. Step 2: Convert to fraction form
    653,074.20/978,299.10 = 372,263.40/x
  3. Step 3: Cross multiply
    653,074.20x = 978,299.10 × 372,263.40
  4. Step 4: Simplify right side
    653,074.20x = 364,184,949,182.94
  5. Step 5: Solve for x
    x = 364,184,949,182.94/653,074.20
  6. Step 6: Final answer
    x = 557,647.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.